Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
nhung cong » dung cong, thong cong, hang cong
dam nhung » cam nhung, nam nhung, dam khung
ho chieu » theo chieu, hoc thieu, doi chieu
tung dam » trung dam, tung dan, tong dam
cong san » cong tac
than cua » nhan cua, thai cua, ban cua
khan cap » khan ap, than cap, khoan cam

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sach - thanh tung dam nhung cong san ((than cua) or (khan cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh tung dam nhung cong san ((than cua) OR (khan cap)).
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh tung dam nhung cong san ((than cua) or (khan cap))*.